They would increase their odds by bringing their own accompanist. (I presume that's allowed)
der Brucer
...Although, sometimes that can backfire. For instance...
At the
Evita call I played a few weeks ago, a young man came in and he said he brought his own accompanist - who, apparently, had also coached him. That's no problem, I don't mind taking a break, and I still get paid whether or not I play.

Since this was sort of a callback, the men were provided with the music beforehand. They just wanted to hear part of "High Flying Adored" and "On This Night of a Thousand Stars". Well...
The young gentleman at the piano starts playing "High Flying Adored"... And I mean playing! He started off simply enough, but then started adding all these virtuosic arpeggios and chord fills, as well as some "interesting" counter-melodies and "echos". However, to accomplish some of these piano stylings he had to "gently" pull the beat/tempo ever so slightly back every now and then. Well...
The singer - his singer - followed accordingly, and seemed basically unaware that there was no definite beat underneath his singing. And he was also singing the song with the wrong acting beat/intention - which I'm assuming was the way his accompanist coached him. *The singer had also come to the piano earlier during the dance part of the audition, and sort of rhetorically asked, "Why does everyone in here knows these words but me?" -They were doing the Soldier's sequence from "Peron's Latest Flame", and everyone else did know, "She should get into her head... " Hmm... -Red Flag #1.
The gentlemen finished, and the people at the table said, "Thank you." And they left the room.
...And the pianist left his card on the piano!
Hmm...
